Can't you un-do in the unit editor?

I just screwed myself over.. I have been making changes for the last hour and I accidently deleted the felhound unit which is used in my summoner heroes summon spell...
I've tried everything and I can't undelete it or undo what I did... it's like gone forever...

That's why you save frequently and often.

--generalmx "nihilist" mx

ur saying u deleted the main felhound creep unit in the unit editor? or a custom unit u made from the felhound model